venue and setlist throughout the campaign. A new guitar controller was developed for the game to help with "shredding" and an art style to match the changes made in the game's visuals. The guitar hardware has been significantly redesigned to locate most of the base electronics and wireless controls into the main fretboard of the unit, containing the colored fret buttons, strum and whammy bar, and other controls for interacting with the game console. As such, this allows the body of the guitar to be swappable with custom designs, allowing players to personalize the control to their wishes; one design will be exclusive to those that pre-order the game through GameStop. The new guitar controller remains backwards compatible with previous games. Within North America, the new drum kit is also sold individually or in bundles with Warriors of Rock. The kit had previously been packed with Band Hero in the United Kingdom and with the Wii version of Band Hero in North America, but otherwise was not sold separately. The drum kit is MIDI-enabled with a detachable "drum brain" allowing other drum kits to be used instead with the game, while the game's kit can be used with any MIDI-capable music editing system. The music video for Soundgarden's "Black Rain", is animated by Titmouse, Inc., the same studio that performs the in-game animations for Guitar Hero as well as Metalocalypse, and includes images of a young man playing Guitar Hero using the new guitar controller introduced in Warriors of Rock. A demo for the game was released on Xbox Live on September 7, 2010, and features four songs: "Children of the Grave" by Black Sabbath, "No Way Back" by Foo Fighters, "Ghost" by Slash featuring Ian Astbury, and "Bloodlines" by Dethklok. On release, some players reported getting faulty discs, which Activision stated they will replace. Soundtrack There are 93 songs on disc for Warriors of Rock. According to Bright, all the songs were selected to fit within a narrow set of music genres, "punk, alternative rock, and classic rock", to avoid dilution of the game's focus. Bright noted that "there's still range and still a lot of variety in this game" to avoid alienating long-time fans of the series in general. The developers also looked at various song structures and considered if they would be fun to play; Bright said that a good song for the game "would have a